A Random Sample of 64 Items Is Selected from a Population

question 79

Multiple Choice

A random sample of 64 items is selected from a population of 400 items.The sample mean is 200.The population standard deviation is 48.From these data, the 90% confidence interval to estimate the population mean would be _______.

• A)189.21 to 210.79
• B)188.24 to 211.76
• C)190.13 to 209.87
• D)190.94 to 209.06
• E)193.45 to 211.09

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Definitions:

Efficient

The ability to achieve a goal using the least possible resources or time, often with minimal waste.

Criterion-referenced Tests

Assessments intended to measure what an individual can do relative to predefined criteria, rather than in comparison to others' performance.

Performance Testing

Testing conducted to determine the speed, responsiveness, and stability of a system under a workload.